Brushing, grinding, and polishing machine.



No. 551,492. Patented lune l2, I900.

B. NICHOLS, BRUSHING, GRINDING, AND POLISHING MACHINE.

' (Application fllad my 18, man. (No Modal.) 3 $heets'-Sheat I.

In: Nonms PETERS co moiaLlYHm, WASHINGTON, 0.1:.

No. 65!,492. v Patented June [2, I900. B. NICHOLS.

BRUSI'IING, GRINDING, AND PIJLISHING MACHINE. (Application filed Kay 18, 1899.)

(No Model.) a Sheets-Sheet v2.

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.No. 65I,492. Patented .Iune l2, I900.

, B. NICHOLS.

BRUSHING, GRINDING, AND POLISHING MACHINE.

(Application-filed May 18,- 1899) 3 Shaets8h eet 3.

(No Model.)

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NITED STATES PAT NT OFFICE.

BENJAMIN NICHOLS, OF JAMESTOWN, NEW YORK, ASSIGNOR TO THE AMERICAN AXE AND TOOL COMPANY, OF NEW YORK, N. Y.

BRUSHING, "GRINDING, AND-POLISHING MACHINE.

sPnoirIcATIoN' forming part of Letters Patent No. 651,492,- dated time-12,- leoo.

' Application filed the 18, 1899. serial No. 717,273. (No model.)

To aZZ whom it may concern:

Be it known that I, BENJAMIN NICHOLS, a citizen of the United States of America, residing in Jamestown, in the county of Chautauqua, in the State of New York, have invented a certain new and useful Improvement. in Brushing, Grinding, and Polishing Machines, of which the following is a true and exact de* scription, reference being had to the. accom panying drawings, which form a part thereof.

My invention relates to mechanism such as isused for brushing, grinding, and polishing, and is particularly designed 'for polishing axes, although well adapted for use with other articles of manufacture.

The object of my invention is particularly to provide means for subjecting all parts of an irregularly-shaped object, such as an ax, to a uniform brushing and polishing treatment andin this connection toplace the movemerit of the object being treated completely in the ,operators control, sothat it can be shifted under the action of the brush or disks or held in position to be treated or out of position to be treated, asmay be'desired.

The nature of myimproveinents will be best understood as described in connection with the drawings in which they are illustrated, and in which- Figure l is a rear view of the machine; Fig. 2, an end View; Fig. 3, a horizontal section taken as on the, line 3 3, Fig. 1. Fig. 4 is a front View of the machine; Fig. 5, a top View with the main driving-belt partially cut away.

Figs. 6 and 7 are respectively a side elevation and a plan, on a larger scale, of details shown in Figs. 4 and 5. Fig. 8 is a section on line 8 8 of Fig. 7, and Fig. 9 illustrates a modification.

The frame of the machine is indicated by the uprightsAA, topped by laterally=projecting cross-pieces A.

A A are cross-pieces of the framing, serving to support certain operative parts; A a Vertical guide. Q

B B are horizontal guide-pieces supported on the cross-pieces A A O and O are sliding platforms supported 011 the guides B B and each supporting in turn shaft-bearings, as indicated at 0 0 O 0 indicate bars adjustably secured to the platform 0 and O and supporting at their inner ends rollers C 0 To the inner ends of the platforms 0 and C, as indicated at C 0 are secured cords (J C, to the ends 'of which in turn are secured weights ()7, which tend to draw the two plat- 1 formstogether.

C indicates a pulley over which one of the cords 0 passes.

' D and D are parallel shafts secured in the shaft-bearings O of the platforms 0 and 0. Each of these shafts supports a pulley-wheel, as indicated at D D and has secured to its outwardly-projecting end a grinding, brushing, or polishing disk, as indicated at D and D where they are shown as polishing-disks, or at (1 01 Fig. 9, where they are shown as brushes. These disks or brushes'of course follow the motion of the platform 0 and C and are normally drawn. togetheror toward each other by the action of the weights (3 0 E E'are levers pivoted to the frame at E- and having shaft-bearings at theirinner ends. F is the main driving-shaft of the machine.

To it are secured the pulley F, through whichpoweris applied to drive the machine, the main driving-pulley F by which the power is transmitted, as will be described, to the disks, and a pulley F by which power is transmitted to other operative parts of the machine.

G is a shaft secured in the bearings attached to the cross-pieces A and supporting a pulley G.

H and h are shafts secured inbearings supported on the cross-bars A and supportingpulleys H and h. I is a shaft also supported by the cross-bars A and to which is secured a pulley I.

J is a shaft supported on the free ends of the levers E and having secured to it a pulley J. This pulley, it will be understood", is in the nature of a take-up pulley.

K is the main driving-belt, which, following the direction of the arrows, passes from the under side of the pulley F over the pulley H, thence under the pulley D thence over the pulley I, thence under the take-up pulley J', thence over the pulley h, thence under the pulley D thence over the pulley Gr back to the main pulley F as shown. This arrangement of the pulleys and belt is such as will permit the platform O and C, carrying the brushes d (For polishing-disks D and D to move away from or toward each other without in theleast aifecting the transmission of power to the pulleys.

L is a shaft, which, as shown, (see Fig. 7,) has a bearin g L of such a character as to give it a certain angular freedom of motion and a second bearing L (see Figs. 6 and 8,) supported and moving on a slide, as indicated at 1*. Secured to the shaft L is a pulley L,

which is driven from the pulley F on the shaft F by means of a belt M and drives a friction-pulley drum L also secured to shaft L.

N is a shaft also supported on the .crosspieces A and having secured to it friction pulley or drum N, lying immediately in front of the friction-pulley L and also a gear-wheel N which is engaged with a gear-wheel 0 secured in turn on a shaft .0, having at its other end a crank-disk O, carrying a crank- Q is a brake arranged in front of the friction-drum N and secured to a lever Q, pivo'ted at Q.

P is a rod connected with the ends land (1 of the shaft L and lever Q, and also connected, as shown, with the short arm P of the bell-crank lever P P pivoted as indicated at P, and by turning which it is obvious the friction-drum L and brake Q will be simultaneously shifted in the same direction with reference to drum N, the effect being to bring either the friction-wheel or the brake into contact with the drum N, the contact of the two friction-drums effecting the revolution ofthe shafts N and O, and the contact of the brake with the drum N at once ararresting this motion and holding the parts in the position at which the brake takeseffeet.

I is a spring normally acting to draw the arm P of the bell-crank lever upward and to hold the brake Q in contact with the drum N and the positively-actuated drum L out of contact.

P is a rod extending downward from the arm 1? of the bell-crank lever to a treadle P, pressure on the treadle shifting the position of the bell-crank lever and of the rod P, so as to bring the positively-actuated drum into contact with the drum N and release the brake Q vice passes between the rollers 0 G attached to the adjustable bars C C and as this shifting device is moved up and down it will be obvious that the platforms C and C and the disks supported thereon will be moved out or in in conformity with the shape of the shifting device R which device can be given any form which may be desirable to cause the movements of the disk to conform with greater or less accuracy to the form of the article being brushed or polished.

In operation the belt K'is in constant motion and the operating-disks in'constant revolution. Then an ax or'other article is to be brushed or polished, it is placed or supported on the work-holding device R and the operator then draws down the arm P of the bell-crank lever, as by placing his footon the treadle P, shifting the positively-actuated drum L into contact with thedrumN, and releasing the brake Q This at once causes the revolution of the crank -disk 0, and through the mechanism describedcausesthe work-holding device It and the disk-spreading device R to reciprocate, carrying the work up and down between the disks D and D which disks are moved toand away from the work and from each other by the shifting mechanism and in accordance with the form of this mechanism, which, as stated, should conform more or less closely to the form of the article under treatment. The ax or other article being treated can be arrested in any position by simply releasing the pressure on the treadle,whereui )on the positively-actuated drum is moved out of contact and the brake Q into contact with the brake N.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is- V 1. The combination of two operative disks,

as D D means for supporting and operating said disks arranged to permit them to move freely to and from each other,- a reciprocating disk-shifter, a work-holder reciprocating synchronously therewith, positively-actuated means for actuating the disk-shifter and workholder and means under the control of the operator for rapidly engaging and disengaging said reciprocating device.

2. The combination of two operative disks, as D D, means forsupporting and operating said disks arranged to permit them to move freely to and from each other, a reciprocating disk-shifter, a work-holder reciprocating synchronously therewith, disengage'able means for actuating the disk-shifter and work holder and a brake operating alternatively with said means for arresting them in whatever position they are in when disengaged.

3. The combination of two operative disks, as 1) D means for supporting and operating said disks arranged to permit them to move freely to and from each other, a slide, as R, a work-holder moving with said slide, means for reciprocating said slide including shaftN and drum N,apositively-driven friction-drum L and a brake Q arranged on opposite sides of drum N and means for simultaneously shifting drum L and brake Q to bring them alternatively in contact with drum N.

4. The combination of two operative disks, as D D means for supporting and operating said disks arranged to permit them to move freely to and from each other, a slide, as R, a work-holder moving with said slide, a diskshifter also moviug with said slide, means for reciprocating said slide including shaft N and drum N, a positively-driven friction-drum L and a brake Q arranged on opposite sides of drum N and means for simultaneously shifting drum L and brake Q to bring them a1: ternatively in contact with drum N.

5. The combination with the shifting operative disks D D of the belt-pulleys D D attached to the shafts of the disks and moving with them, the driving-pulley F the fixed pulleys H h G and I attached to the machine-frame, the take-up pulley J and the belt K passing over said pulleys as described to operate the disks.

BENJAMIN NICHOLS. Witnesses:

ELLA A. JACKSON, 1 GEO. L. HAMILTON. 

